Machine for forming and seasoning tubular bodies.



A. M. HAYMAKEB a; J. P. APPLEMAN. MACHINE FQR FORMING ANQ- SEASONING TUBULAR BODIES.

APPLICATION. man A51. is, ISH.

Patented Oct. 31, 1916.

WITNESSES M44. ,2 j M,

A TTO/UVE Y.

nnrrnn erases earner orric ii ARTHUR M. HAYMAKER, or nosnroann, Ann JOHN P. APPLEMAN, or INGRAM,

PENNSYLVANIA.

MACHINE FQR FORMING AND SEASONING TUBULAR BODIES.

Specification of Letters latent.

Patented Oct. 31, 1916.

Application filed April 18, 1911. Serial No. 621,936.

To all Whom it in my concern -Be it known that we, ARTHUR M. HAY- MAKER and JOHN P. APPLEMAN, residents of Rosedale and Ingram, respectively, in the & county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Machines for Forming and Seasoning Tubular Bodies, of which the following is a specification.

This invention relates to the molding of concrete or cement hollow bodies such as pipe, conduits, posts, columns, etc., and the primary object is to provide apparatus 111 which such bodies may be effectively molded 15 and thoroughly dried or seasoned and water- While the invention in its preferred adaptation contemplates the molding of reinforced bodies, and hence has provision for 30 supporting a skeleton reinforcement in the mold cavity, the invention is not thus restricted, as if bodies are desired which are not to be reinforced the reinforcement 18 sim 1y omitted. ae. i

characteristic of the invention is the provision of means for heating the mold walls and thereby drying the material as it solidifies, the moisture escaping through the open upper end of the mold cavity through so which the molded material is admitted. In

furtherance of this heating and drying feature the mold walls are adapted to be moved relatively to each other during'the molding operation, thereby subjecting the material 3& to uniform heating and drying, and at the same time causing it to settle solidly and fully fill themold. cavity. In the present adaptation the outer and inner mold walls, the latter in the form of a mandrel, are circular in cross section so that the movements imparted thereto are rotary, and the walls may be rotated in the same direction or in reverse directions as preferred.

Still a further object is to so construct the outer mold wall that it maybe opened for releasing the molded body, said wall being in vertical sections which are hinged together.

The invention also includes efiicient means for rotating the inner and outer walls, with the rotating means for the outer wall so arranged that it may be opened and closed without interference from. the rotating means.

The accompanying drawings illustrate desirable embodiments of the invention, Fig

ure 1 being a vertical section of the same with the skeleton reinforcement in position in the mold cavity, and the mold closed ready for the molding operation. Fig. 2 is a top 'plan of the sanie. Fig. 3 is a cross section on line IIIIII of Fig. 1. Fig. l

IS an elevation of the skeleton reinforcement, and Fig. 5 is a detail of one of the skeleton bands or rings. Fig. 6 is a cross section of apparatus of modified form.

Referring to the drawings, 2 designates a base on which the upright segments or sections of the outer mold Wall 3 are rotatably supported on rollers 4, the latter journaled to the wall sections near their lower ends, as indicated at 5. The wall sections 3 are hollow from end to end as indicated at 6, with the lower extremity of the hollow wall open as at 7, this opening registering with steam or hot water inlet 8 in base 2, this regardless of whether the mold is rotating or standing still. The heating medium may escape from the upper end of the hollow wall through a suitableoutlet 9. Y

The inner wall 10 of the mold'is in the form of a hollow or tubular mandrel which is rotatably supported at its lower end by.

the hollow spindle 11 through which steam or hot water may be admitted. At the upper end of the mandrel is the tubular spindle or trunnion 12 which forms an outlet for the steam or water, said spindle being embraced by the two-part bearing arm 13 pivoted to the upper end of one of the outer wall sections 3.

The wall sections 3 are hinged together at 14 for opening and closing, latches 15 being utilized for holding them closed. For rotating the outer wall 3 a gear 16 is carried thereby near its lower end, the gear being in segments corresponding to sections 3 of the mold wall and forming a complete'gear when the mold is closed. A pinion 17 adaptlee-n nor to rotating both walls, as either may be rotated alone or they may be rotated n same or in reverse directions, as gireierrerl.

Base 2 comprises the bottom of the molding cavity and serves to support'the reinforcing skeleton, being provided witl, sockets 23 to receive the lower extremities of longitudinal rods A. of the reinforcement. While the latter may be variously constructed, it is preferably of the form shown in Figs. 4 and 5, a series of longitudinal rods A being connected at intewals by the ringlike bands B which are twisted to form eyes U for confining the rods.

As will be readily understood, the base 2, being stationary, not only provides a support for the inlet 8 for the outer mandrel, but also acts to retain the product against rotating movement, both by reason of the reinforcements A and by reason of its fornr ing the part on which the product is supported, the weight of the product thereon aiding in holding the product stationary. This is of especial advantage in connection with theformation of a product such as the apparatus is designed tojoroduue, the elemerits of the plastic material being such that an attempt to rotate the product as it is being formed would tend to disd'ort and crack the product as Well as increase the time required to render the product soiliciently stable to permit its being removed.

in operation, the mold is opened, pinion "17 being removed from gear 16 for this purpose, as in dotted lines in Fig. 1, and With the bearing arm 1.3 for the top of the mandrel opened, the reinforcement may be'read ily slipped down over the mandrel and seated on base The mold is then closed and the concrete, cement, or other plastic material is filled into the open top. With one or both of the mold Walls in motion as this filling proceeds the material is agitated Within the mold and caused to settle and fully fill the same. After the cavity has been filled the motion ofone or both walls is continued. ln the meantime the radiated heat from the steam or hot water through the wall cavities drives oil the moisture and causes the material to solidify. merit of the mold walls prevents the material from sticking and at the same time finishes the surfaces so that no subsequent dressing is necessary.- The body is thus fully dried, seasoned, and Waterprooi'ed while confined in the mold and has no opportunity during its seasoning stage to warp or become distorted. the mold is opened and the molded body slipped from the-mandrel, the body being quite stable, so that it may be readily removed to a kiln, 0r safely handled for such other treatment as may be necessary to put it in condition for service. l l hile the mold cavity is here shown tapering upwardly from The more When fully, seasoned its lower end, which is desirable sci forms of columns and other bodie" taper is not essential to the successliul 'tion of the apparatus.

In the modification shown in Fig. 6, the outer mold 3" is in a single tubular part--- not split or in sections, and may be lowered around and raised from the'inandrel by suitable ineans, as for stripping it from the molded body. In otherrespects the coin structioa. and operation are the same in. the adaptation described.

' We claim z- 1. Arnold hollow bodies cor a hollow rotatable outer Wall, an inn. spaced the outer wall to form a ing cavity, and relatively stat-ionarv' for ai'linitting heating medium to hol low outer Wall as it rotates.

A n'iold for hollow bodies coiiaprisin rotatable hollow inner and outer a spaced apart to form a molding means for admitting a heating i theinner wall it rotates, and relamv'ei statim'iar means for admitting the L medium to the outer Wall as it rotates.

3?. A mold reinforced cementitious hol low bodies, comprising inner walls with one Wall rotatable relativcl jto the other wall, the walls spaced apart to form a molding cavity, and a axed bottom for said cavity,.said bottom having sockets to receive the reinforcing element struci; during the moldingoperatio;n.- v

4. A mold reinforced C(ill'll ntitious hollow bodies, comprising an upright tubular outer wall rotatably supported, an upright inner Wall rotatably supported and spaced from the outer Wall to form a molding cavity, and a fixed hot so for the molding can ity, said bottom having sockets to receive the reinforcing element structure during the molding operation. 1

5. A mold for reinforced cementitious hollow bodies, comprising inner and outer walls spaced apart to form a molding carit-v, a fixed bottom forsaid cavity and having sockets to receive the reinforcing element structure during the molding operation, the outer well being rotatable, said outer Wall formed in longitudinal sections adapted to open and close relatively to the molding cavity, means for supporting said sections to permit rotative movements thereof as unitary structure, ear segments carried by 1 the outer mold sections and forming a cor plete when said mold is closed, and a mold rotating pinion adapted to mesh with said gear.

6. A mold for hollow bodies comprising an upright rotatable hollow Wall, on upright rota't ble hollow mandrel Within and spaced froni'said Wall to form a molding cavity,.a tubular spindle for the lower end of and communicating with the hollow manits drel, the spindle serving as a conduit for a mandrel heating medium. and relatively stationary means for conducting a heating medium to the said hollow wall as it rotates;

'bination of a fixed base, an outer mold wall extending to the base. wheels rotatabl \-'.sup-

-porting said wall on the base, gearing for rotating the outer wall, an inner wall 'rotatable withln and spaced from the outer wallwith the fixed base forming the bottom of the molding cavity between the walls, and gearing for rotating the inner wall.

9. A mold for hollow bodies comprising inner and outer walls spaced apart to form a molding cavity with the outer wall rotatable and formed hollow for admitting a heating medium, and a stationary base forming the bottom for the cavity andcarrying the heating medium supply.

10. Means for producing reinforced 'cementitious hollow bodies,- comprising inner and outer rotatable molding elements forming an annular cavity and having afiXed bottom for the product, said bottom having sockets" to receive the reinforcing element during the molding operation, said molding elements each being rotatable with respect to the product.

11. Means for producing hollow bodies comprising inner and outer rotatable hollow molding elements forming an annular cavity and having a fixed bottom support for the product, sald elements each being rotatable with respect to the product, and means for admitting a heating medium to said elements while rotating. I i In testimony whereof \ve afiix our signatures in presence of two witnesses.

ARTHUR HAYMAKER. JOHN P. APPLEMAN. Witnesses A. A. NrLsox, C. R. KINXEAR. 

